





Stainless steel boiler tubes refer to pipes made of stainless steel that are used to transport fluids such as thermal water in boiler piping systems. Stainless steel boiler tubes have the characteristics of high-temperature resistance, corrosion resistance, pressure resistance, etc., and are widely used in petrochemical, metallurgy, aerospace, and other fields.
The boiler tube refers to both ends of the opening and has a hollow section. The use of temperature is divided into general boiler tubes and high-pressure boiler tubes two kinds. Stainless steel boiler tube is a kind of seamless tube. The manufacturing method is the same as seamless pipe, but there are strict requirements for the steel type used in the manufacturing of steel pipe.
The mechanical property of the boiler tube is an important index to ensure the final service performance (mechanical property) of steel, which depends on the chemical composition of the steel and the heat treatment regime.
In the steel pipe standard, according to the different use requirements, the provisions of the tensile performance (tensile strength, yield strength or yield point, elongation) and hardness, toughness index, as well as the user requirements of high, low-temperature performance.
The general boiler tube temperature is below 350℃, the domestic tube is mainly made of 10, 20 carbon junction steel hot rolled tube or cold drawn tube.
A high-pressure boiler tube is often used in high-temperature and high-pressure conditions, the tube in the high-temperature flue gas and water vapor, oxidation, and corrosion will occur. The steel pipe is required to have high lasting strength, high oxidation and corrosion resistance, and good structural stability.
Stainless steel boiler tube use:
1. General boiler tube is mainly used to manufacture water wall pipes, boiling water pipes, superheated steam pipes, superheated steam pipes for locomotive boilers, large and small smoke pipes arch brick pipes, etc.
2. High-pressure boiler tube is mainly used to manufacture high-pressure and ultra high-pressure boiler superheater tube, reheating tube, airway, main steam pipes, etc.
Introduction
| Item | Stainless Steel Boiler Tube/Pipe | ||||||||||
| Standard | ASTM GB DIN JIS EN etc. | ||||||||||
| Material | 201 304 304L 316 316L 309S 310S 316Ti 317 317C 321 347 347H 304N 316N | ||||||||||
| Surface | Annealing and Pickling/Polished | ||||||||||
| Shape | Round Pipe/Tube | ||||||||||
| Type | Cold drawing and cold rolling | ||||||||||
| Processing Service | Bending, Welding, Decoiling, Punching, Cutting, Mo | ||||||||||
| size | Length | 6m or as required | |||||||||
| Outer diameter | OD: 6.35mm~762mm, WT: 0.51mm~50.8mm | ||||||||||
| Delivery time | Within 5-30 days after receiving the prepaid | ||||||||||
| Package | With plastic caps on both end , pack into Bundles/customized | ||||||||||
Production process.jpg)
Size of stainless steel pipe
| DN | NPS | OD(MM) | SCH5S | SCH10S | SCH40S | STD | SCH40 | SCH80 | XS | SCH80S | SCH160 | XXS |
| 6 | 1/8 | 10.3 | - | 1.24 | 1.73 | 1.73 | 1.73 | 2.41 | 2.41 | 2.41 | - | - |
| 8 | 1/4 | 13.7 | - | 1.65 | 2.24 | 2.24 | 2.24 | 3.02 | 3.02 | 3.02 | - | - |
| 10 | 3/8 | 17.1 | - | 1.65 | 2.31 | 2.31 | 2.31 | 3.2 | 3.2 | 3.2 | - | - |
| 15 | 1/2 | 21.3 | 1.65 | 2.11 | 2.77 | 2.77 | 2.77 | 3.73 | 3.73 | 3.73 | 4.78 | 7.47 |
| 20 | 3/4 | 26.7 | 1.65 | 2.11 | 2.87 | 2.87 | 2.87 | 3.91 | 3.91 | 3.91 | 5.56 | 7.82 |
| 25 | 1 | 33.4 | 1.65 | 2.77 | 3.38 | 3.38 | 3.38 | 4.55 | 4.55 | 4.55 | 6.35 | 9.09 |
| 32 | 1 1/4 | 42.2 | 1.65 | 2.77 | 3.56 | 3.56 | 3.56 | 4.85 | 4.85 | 4.85 | 6.35 | 9.7 |
| 40 | 1 1/2 | 48.3 | 1.65 | 2.77 | 3.56 | 3.56 | 3.56 | 4.85 | 4.85 | 4.85 | 6.35 | 9.7 |
| 50 | 2 | 60.3 | 1.65 | 2.77 | 3.91 | 3.91 | 3.91 | 5.54 | 5.54 | 5.54 | 8.74 | 11.07 |
| 65 | 2 1/2 | 73 | 2.11 | 3.05 | 5.16 | 5.16 | 5.16 | 7.01 | 7.01 | 7.01 | 9.53 | 14.02 |
| 80 | 3 | 88.9 | 2.11 | 3.05 | 5.49 | 5.49 | 5.49 | 7.62 | 7.62 | 7.62 | 11.13 | 15.24 |
| 90 | 3 1/2 | 101.6 | 2.11 | 3.05 | 5.74 | 5.74 | 5.74 | 8.08 | 8.08 | 8.08 | - | - |
| 100 | 4 | 114.3 | 2.11 | 3.05 | 6.02 | 6.02 | 6.02 | 8.56 | 8.56 | 8.56 | 13.49 | 17.12 |
| 125 | 5 | 141.3 | 2.77 | 3.4 | 6.55 | 6.55 | 6.55 | 9.53 | 9.53 | 9.53 | 15.88 | 19.05 |
| 150 | 6 | 168.3 | 2.77 | 3.4 | 7.11 | 7.11 | 7.11 | 10.97 | 10.97 | 10.97 | 18.26 | 21.95 |
| 200 | 8 | 219.1 | 2.77 | 3.76 | 8.18 | 8.18 | 8.18 | 12.7 | 12.7 | 12.7 | 23.01 | 22.23 |
| 250 | 10 | 273.1 | 3.4 | 4.19 | 9.27 | 9.27 | 9.27 | 15.09 | 12.7 | 12.7 | 28.58 | 25.4 |
Xinhang Special Material Co., Ltd. Hangzhou Branch is famous China High Pressure Sch 40 Stainless Steel Seamless Boiler Tube For Industrial suppliers and OEM/ODM High Pressure Sch 40 Stainless Steel Seamless Boiler Tube For Industrial manufacturers, founded in 2007 and moved to Longyou Economic Development Zone, Zhejiang Province, in 2022. It covers an area of 130,000 square meters, more than 30 production lines, 300 workers, 20 R&D people, 30 inspection people and an annual output of 50,000 tons.
It has passed ISO9001:2008 quality management system, PED 97/23/EC EU Pressure Equipment Directive certification, China Special Equipment Manufacturing License (Pressure Tube) TS certification, ASME certification, provincial enterprise standardization management system, ISO14000:2004 environment management system, cleaner production (green enterprise), and a series of certifications, as well as China Classification Society (CCS), American Bureau of Shipping (ABS), British Register of Shipping (LR), Deutsche Veritas (GL), Bureau Veritas Society (BV), Det Norske Veritas (DNV), and Korean Register of Shipping (KR) factory certification.
The main products include stainless steel pipes, pipe fittings, flanges, valves, etc., which are widely used in petroleum, chemical industry, nuclear industry, smelting, shipbuilding, pharmaceuticals, food, water conservancy, electric power, new energy, mechanical equipment, and other fields. The company adheres to the corporate tenet of "quality for survival, reputation for development" and wholeheartedly serves every customer to create a win-win situation.




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